That is pretty cool using an old stove with 4 electric elements bolted to the bottom of the kettle. $1,000 seems pretty steep for $150 worth of stainless steel and an old scrap stove but that did take a LOT of welding work!

Either there is additional big heating element inside this BK/fermenter or he is doing no chill and no boil brewing because i dont believe you can boil 30gal with elements mounted on the outside like that